Camp, Emma F and Smith, David J and Evenhuis, Chris and Enochs, Ian and Manzello, Derek and Woodcock, Stephen and Suggett, David J (2016) Acclimatization to high-variance habitats does not enhance physiological tolerance of two key Caribbean corals to future temperature and pH. Proceedings of the Royal Society B: Biological Sciences, 283 (1831). p. 20160442. DOI https://doi.org/10.1098/rspb.2016.0442
Camp, Emma F and Smith, David J and Evenhuis, Chris and Enochs, Ian and Manzello, Derek and Woodcock, Stephen and Suggett, David J (2016) Acclimatization to high-variance habitats does not enhance physiological tolerance of two key Caribbean corals to future temperature and pH. Proceedings of the Royal Society B: Biological Sciences, 283 (1831). p. 20160442. DOI https://doi.org/10.1098/rspb.2016.0442
Camp, Emma F and Smith, David J and Evenhuis, Chris and Enochs, Ian and Manzello, Derek and Woodcock, Stephen and Suggett, David J (2016) Acclimatization to high-variance habitats does not enhance physiological tolerance of two key Caribbean corals to future temperature and pH. Proceedings of the Royal Society B: Biological Sciences, 283 (1831). p. 20160442. DOI https://doi.org/10.1098/rspb.2016.0442
Abstract
Corals are acclimatized to populate dynamic habitats that neighbour coral reefs. Habitats such as seagrass beds exhibit broad diel changes in temperature and pH that routinely expose corals to conditions predicted for reefs over the next 50–100 years. However, whether such acclimatization effectively enhances physiological tolerance to, and hence provides refuge against, future climate scenarios remains unknown. Also, whether corals living in low-variance habitats can tolerate present-day high-variance conditions remains untested. We experimentally examined how pH and temperature predicted for the year 2100 affects the growth and physiology of two dominant Caribbean corals (Acropora palmata and Porites astreoides) native to habitats with intrinsically low (outer-reef terrace, LV) and/or high (neighbouring seagrass, HV) environmental variance. Under present-day temperature and pH, growth and metabolic rates (calcification, respiration and photosynthesis) were unchanged for HV versus LV populations. Superimposing future climate scenarios onto the HV and LV conditions did not result in any enhanced tolerance to colonies native to HV. Calcification rates were always lower for elevated temperature and/or reduced pH. Together, these results suggest that seagrass habitats may not serve as refugia against climate change if the magnitude of future temperature and pH changes is equivalent to neighbouring reef habitats.
Item Type: | Article |
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Uncontrolled Keywords: | climate change; coral reefs; ocean acidification; seagrass beds; environmental variance; thermal stress |
Subjects: | G Geography. Anthropology. Recreation > GC Oceanography G Geography. Anthropology. Recreation > GE Environmental Sciences |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Life Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 18 May 2016 10:19 |
Last Modified: | 30 Oct 2024 20:22 |
URI: | http://repository.essex.ac.uk/id/eprint/16700 |
Available files
Filename: RSPB20160442p.pdf